Osprey 240e/450e User Guide Osprey® 240e/450e User Guide AVStream Driver Version 4.
© 2010 ViewCast Corporation. All rights reserved. Osprey® and SimulStream® are registered trademarks of ViewCast Corporation Microsoft®, Windows®, Windows Server ®2003, AVStream®, DirectShow®, Intel® CoreDuo®, and Windows Media® Encoder are trademarks or registered trademarks of Microsoft Corporation. Any other product names, trademarks, trade names, service marks, or service names owned or registered by any other company and mentioned herein are the property of their respective companies.
Osprey 240e/450e User Guide Contents Overview ............................................................................................................................. 1 Warranties .......................................................................................................................... 1 System requirements .......................................................................................................... 2 Minimum system requirements ...........................................
Contents Diagnostic logging ....................................................................................................... 40 Extras........................................................................................................................... 40 Device Info .................................................................................................................. 42 Captions tab ....................................................................................................
Osprey 240e/450e User Guide Audio properties page ...................................................................................................... 75 Audio formats ............................................................................................................. 76 Audio playback ............................................................................................................ 76 Audio configuration .................................................................................
Osprey 240e/450e User Guide Overview Thank you for purchasing the ViewCast Osprey 240e/450e video capture card. This user guide provides step-by-step instructions for installing and using your new video capture card. For the latest ViewCast product information and news, visit our website at www.viewcast.com. Warranties For complete warranty details, refer to the specific warranty included with each product.
Overview System requirements The following system requirements relate to your Osprey® video capture card only. The video capture or encoding applications you use will likely require a much more powerful system than that which is listed below. Please consult your software documentation for applicable system requirements.
Osprey 240e/450e User Guide Installation Steps In all cases, use the setup.exe program on the product CD or in the web package if you downloaded it. The setup program automates the Plug and Play steps needed to install the drivers and ensures they are performed correctly. It also installs the bundled applets and User’s Guide. If you have multiple Osprey capture cards in the system it configures all of the boards at the same time.
Installation Steps Custom installing AVStream During the installation process, if you choose a Custom installation, your options are limited (Figure 1). Figure 1. Osprey 240e Custom Setup screen This window allows you to choose individual components you may want to install. You can also change the location where components install. Installing the video capture card This manual covers one class of Osprey devices that include two PCI Express cards.
Osprey 240e/450e User Guide To install the video capture card: The New Hardware Wizard runs and the Found New Hardware window appears followed by the Digital Signature Not Found window (Figure 2) Figure 2. Digital Signature Not Found Window 1. 2. 3. 4. Click Continue Anyway. We have tested our cards in thousands of PCs. The Controller installing window displays, and the text inside this window changes to Osprey Video Capture Device, Installing ...
Osprey 240e/450e User Guide Setting Driver Properties After installing the Osprey card and AVStream driver, you need to access the card’s settings and possibly modify them to fit your needs. This manual takes you step-by-step visually through the card settings. Start by opening the Osprey Config utility. Afterwards, we can explore the driver. You need to use a DirectShow application such as Microsoft Windows Media® Encoder or RealProducer®.
Setting Driver Properties OspreyConfig’s initial processing sequence After clicking on the Osprey Config icon, the first screen of the application appears (Figure 5) showing the cards and devices installed on your computer. Figure 5. Initial OspreyConfig user interface In this example, the computer in use has one card and four devices. The card can take a single input and stream the content differently, for example, you can use several bit rates, sizes, and formats.
Osprey 240e/450e User Guide Figure 6 shows the user interface that appears when you select a filter. We expanded the Osprey 450e Device 1A and selected Video Filter. We’ll continue with this device unless we indicate otherwise. Figure 6.
Setting Driver Properties When you choose Device1A and Video Filter 1, the Show Properties for Selected Filter button becomes active (Figure 7). Figure 7.
Osprey 240e/450e User Guide Understanding the device properties window Osprey’s device properties window enables you to view and change the default settings of the 4.5 driver. Once you are familiar with the video card’s properties, you can make changes to get the optimum performance from your card and change settings in real time. Device properties are visible through tabs to select different controls (Figure 8). The 4.5 driver includes changes from previous versions - the tabs have changed.
Setting Driver Properties Captions Set up on-video closed caption rendering Logo Set up on-video logos Size and Crop Set the default size, enable cropping, set the cropping rectangle * Telecine refers to the technology used to transfer or repurpose analog film into electronic media. Some of the 4.5 drivers’ controls work interactively and changes in value immediately update the video. Examples include brightness, contrast, hue, saturation, and sharpness.
Osprey 240e/450e User Guide Devices and global controls The Osprey 240e and Osprey 450e video capture cards can present multiple output streams from a single input device. For example, a company may wish to do a webcast globally to resellers, users, or potential customers. Using the Filters Tab, you can set up different output streams with different bit rates to accommodate users with different bandwidths. Some changes may affect the filter, such as cropping, logos, and captions.
Setting Driver Properties Input tab The source of data from an Osprey 240e/450e that streams to the Internet, can come from a number of devices such as DVD players, digital cameras, camcorders, and so forth. Figure 10. Input tab The controls on the Input tab of the driver properties card have a global effect on the Osprey capture card on which they reside. If you have multiple Osprey cards, and you want to make global changes, you have to make the change on each card.
Osprey 240e/450e User Guide The Input tab has the following controls. ViewCast Video Input The Video Input section of the tab allows you to select the video input type coming from your source video. Video Present This indicator is enabled when video is present. Video Standard The Video Standard allows you to select the standard different countries or geographical areas use (Figure 10) from the dropdown list. The North American standard is NTSC. The Japanese standard is NTSC-Japan.
Setting Driver Properties Osprey 450e AV option hardware add-on-device In addition to the standard components built into the Osprey 450e card, you can purchase the Osprey 450e AV Option hardware add-on device. The AV Option exposes additional inputs for Component and S-Video as well as balanced audio. For example, when you choose a Filter from standard Osprey 450e Device 1A; the default option provides a single video capability: Composite. Figure 11.
Osprey 240e/450e User Guide Video standard group Figure 13. Video Standard field Osprey cards can capture country centric data, which can be streamed to the Internet by an encoding application. The Video Standard allows you to select a standard used in specific countries or geographical areas. The Osprey driver has the ability to stream in a number of formats unique to countries and, or geographic locations.
Setting Driver Properties B&W composite camera Figure 16. Notch Kill Black and white input sources are rare these days, but some do exist. For example, you may want to stream black and white historical film in a documentary film.
Osprey 240e/450e User Guide Video Proc Amp tab Video Proc Amp stands for Video Process Amplifier. It controls various characteristics of streaming output from Osprey 240e/450e cards. The Video Proc Amp is the second tab from the left of the Device 1A properties (Figure 17). Figure 17. VideoProc Amp Tab The Video Proc Amp uses slider controls to adjust brightness, contrast, hue, saturation, sharpness, and gamma.
Setting Driver Properties The Video Proc Amp tab has the following controls. Brightness and Contrast These are terms for what one would call a contrast ratio. It’s a measure of a display system, defined as the ratio of the brightest color (white) to that of the darkest color (black) that the system is capable of producing.
Osprey 240e/450e User Guide Video Decoder tab The Video Decoder tab is a Microsoft DirectShow standard control for setting the NTSC/PAL/SECAM video standards (Figure 18). We discussed NTSC while discussing the Input tab. PAL and SECAM are standards used in Europe and other parts of the world. Your Osprey cards can function in computers in various countries with different standards. Figure 18. Video Decoder tab Changes apply to all video previews and stream captures on the currently selected device.
Setting Driver Properties The Video Decoder tab has the following controls. Video Standard Select the video standard Signal Detected When the card does not detect the input signal, this field displays a 0. When the card detects the input signal, it displays 1. Lines detected This field displays the number of lines the card detects in the input signal. VCR Input This field is a DirectShow feature that is not implemented. Output Enable This field is a DirectShow feature that is not implemented.
Osprey 240e/450e User Guide RefSize tab Changes made to the RefSize tab (Figure 19) apply to all video previews and captures on the currently selected device. The RefSize tab controls the features related to the reference size, format, and proportions of the video. Most users can set up this page once and only refer to it occasionally since this page does not provide everyday control for the final output size of your video.
Setting Driver Properties Cancel Click Cancel to reject the settings and close the window. Apply Click Apply to apply the settings. Help Click Help to access the user guide. Horizontal Format Figure 20. Horizontal Format The Horizontal Format has the following controls. Square Pixels CCIR-601 16:9 Wide Use WideScreen Signal (WSS) 24 Use the Square Pixels setting for normal 4:3 video (Figure 20) that is viewed via a computer monitor.
Osprey 240e/450e User Guide WSS is a line of the vertical blanking interval (VBI) that encodes the aspect ratio of the video. It is normally line 20 of 525-line video and line 22 of 625-line video. It is generated by newer DVD players, and is present in PAL broadcast content. The Use WideScreen Signal (WSS) control is useful for both 4:3 and 16:9 input formats, and for both 4:3 and 16:9 output formats.
Setting Driver Properties Source Width Figure 22. Source Width The Source Width control (Figure 22) can be used to trim the black left and right edges of an image. This control is only available for NTSC video, and only when the Horizontal Format is set to Square Pixels such that the reference size is 640 x 480. To trim an image: 1. With video preview running, click 720 to display the entire image, which usually includes black left and right edges. Changes appear interactively. 2.
Osprey 240e/450e User Guide Reference Size for Crop and Logo Placement Figure 23. Reference Size for Crop and Logo Placement This part of the dialog is read-only because you do not set it directly – rather, it shows the results of settings made elsewhere in the dialog. The settings shown by the 525-line / 625-line buttons reflects the video standard selected in the Input or Video Decoder tab (Figure 23). NTSC and PAL-M formats result in 525-line, 29.97 frame per second video.
Setting Driver Properties of the displayed video. In films and analog broadcast video, however, lines 21 and 284 are often used for Closed Caption. In broadcast video, lines 22 and 285 are sometimes used for proprietary ancillary data. If these lines are used for data they will appear as moving bands or streaks across the top lines. Therefore, the most generally useful start lines are 23 / 286. Some broadcast video also uses additional top line pairs for ancillary data.
Osprey 240e/450e User Guide Filters tab The Filters tab (Figure 25) covers two independent technologies: SimulStream and deinterlacing. Functionality for both technologies exists on the Filters tab. In this discussion we will examine each technology separately. Figure 25. Filters tab The RefSize tab has the following controls. SimulStream Enables SimulStream to output the same video in different sizes, color formats, frame rates, crops, logos, and captioning.
Setting Driver Properties Apply Click Apply to apply the settings. Help Click Help to access the user guide. Filters have two interrelated purposes: 30 They allow applications to enumerate and list DirectShow video capture and preview pins or streams (each with different settings) as named entries in their video device select list. You can set up the driver to show 1 to 10 filters per device. Each filter has one preview pin and one capture pin.
Osprey 240e/450e User Guide SimulStream ViewCast includes an evaluation version of SimulStream with the Osprey 240e and Osprey 450e cards. Evaluation mode works the same as full SimulStream except that an evaluation logo is displayed on the video. If you have set up a custom logo, the evaluation logo and the custom logo appear in the video. The evaluation logo appears until you purchase SimulStream. For details about purchasing and installing SimulStream, refer to http://www.viewcast.com. Figure 26.
Setting Driver Properties Multiple instances Figure 28. Multiple instances You can have as many streams from the device as you want. They can have different resolutions, bit rates, and formats. The term one filter means all streams have the same Osprey custom properties. Specifically, cropping, logos (watermarks), and NTSC Closed Caption rendering settings work the same for all streams on the device when the Multiple Instances option is selected. The advantage of this mode is that it is simpler.
Osprey 240e/450e User Guide Allow multiple instances of each filter This control enables you to allow multiple instances of an application to use a single Osprey device. For example, with the option disabled, only one instance of WME can encode video from Osprey XXOe Video Device 1. When the option is enabled, multiple instances of WME can encode video from the same video device. However, all cropping, size, and logo settings apply to all instances.
Setting Driver Properties Deinterlace Figure 30. Deinterlace settings The deinterlace group has four radio buttons. Auto Apply inverse telecine deinterlacing to all telecine video. Apply motion adaptive deinterlacing to all video that is not telecine. Switch dynamically between the two modes as the content changes. Available for NTSC video only. Inverse Telecine Apply inverse telecine deinterlacing to all telecine video. Perform no deinterlacing of video that is not telecine.
Osprey 240e/450e User Guide Motion adaptive deinterlace Motion adaptive deinterlace is an algorithm for deinterlacing pure video (non-telecine) content. It detects which portions of the image are still, and which portions are in motion, and applies different processing to each. Currently Using group These indicators allow you to see the current algorithm. These are not control buttons; they are readonly indicators.
Setting Driver Properties Adaptive Deinterlace window Use the adjust dialog to adjust the parameters that control motion adaptive deinterlacing (Figure 32). Note: When the driver is using the Inverse Telecine algorithm, either in Telecine mode or Auto mode, the Adjust settings have no effect at all, and Test Mode is inoperative. Figure 32. Adaptive Deinterlace window The Adaptive Deinterlace window has the following controls.
Osprey 240e/450e User Guide Sharp Motion The Sharp Motion option makes detail in motion areas sharper, but at the expense of somewhat jagged diagonal edges. Test Mode The Test Mode option causes the motion adaptive algorithm to enter a test mode that displays motion pixels as bright green dots. The dots are mainly along edges that are in motion, but if the motion threshold is set too high there may also be a random distribution of green dots caused by pixel jitter and instability of the video signal.
Setting Driver Properties If the content format is a rapidly changing mix of telecine and video, or is all video, or is of unknown type, the Motion Adaptive setting gives the most consistent results. The quality of telecine sequences is not the best possible, but there are no instances of frames not deinterlaced at all due to telecine re-locking. Device tab Device controls (Figure 33) are less often used items.
Osprey 240e/450e User Guide Apply Click Apply to apply the settings. Help Click Help to access the user guide. No-Video Test Pattern You can select one of four patterns to appear when no video signal is present – 75% color bars, 100% color bars, blue, and black. You can place a text line on the test pattern. If the Text edit box is empty - no spaces and no text characters – then no text will exist. Otherwise, whatever you type here, up to 32 characters, displays on the test pattern.
Setting Driver Properties Click Default to return to the default settings. Diagnostic logging For use by ViewCast Technical Support only. Extras Extras (Figure 35) are features of the AVStream driver that are new, not fully defined, or subject to change. Extras may also include workarounds to apparent DirectShow issues that are expected to be resolved fairly soon. Figure 35. Extras Extras should be expected to change more frequently than other aspects of the driver.
Osprey 240e/450e User Guide ViewCast 41
Setting Driver Properties Device Info Figure 36. Device Info The Device Info window displays useful information about the capture card and the driver, including the DirectShow name of the device (Figure 36). Click OK to close the window.
Osprey 240e/450e User Guide Captions tab Figure 37. Captions tab The Captions tab has the following controls. Pin Select The drop-down list has three choices: Capture Preview Both Render NTSC Closed Captions On Video The driver can render closed captions on video when NTSC video is selected on the input. Render Logical White as This control group maps white captions to a color other than white.
Setting Driver Properties CC Pin This group controls whether the closed caption character pairs emitted by the DirectShow CC pin are from Field 1 or Field 2 of the video. OK Click OK to accept the settings. Cancel Click Cancel to reject the settings and close the window. Apply Click Apply to apply the settings. Help Click Help to access the user guide. Pin Select If you like, however, you can have different setups for the two pins.
Osprey 240e/450e User Guide Render NTSC Closed Captions On Video Figure 38. Render NTSC Closed Caption On Video The 4.5 driver can internally render closed captions on video when NTSC video is selected on the input (Figure 38). There is a control to select which channel to render (although CC 1 is the only channel that is commonly used). This control only affects rendering on video performed internally by the driver. The AVStream 4.5 driver has two additional ways of delivering captions.
Setting Driver Properties CC Pin Figure 40. CC Pin This group controls whether the closed caption character pairs emitted by the DirectShow CC pin are from Field 1 or Field 2 of the video. The DirectShow specification is that CC on a CC pin is always from Field 1; however, this extension allows application developers to access Field 2 data such as XDS data (including vchip) via a DirectShow standard pin.
Osprey 240e/450e User Guide Logo tab Figure 41. Logo tab The Logo tab has the following controls. Pin Select The drop-down list has three choices: Capture Preview Both Enable Logo on File and Color sub tab From this control, enable or disable the logo. Enable Key Color on File and Color sub tab Control the key color and efficiency effect.
Setting Driver Properties Weighting on File and Color sub tab Set the degree of transparency of the logo. Position and Size sub tab Set the position of the logo and the scale. OK Click OK to accept the settings. Cancel Click Cancel to reject the settings and close the window. Apply Click Apply to apply the settings. Help Click Help to access the user guide. The logo property superimposes a graphic over captured video using the logo property controls (Figure 41).
Osprey 240e/450e User Guide Pin Select You can have different setups for the two pins. For example, you could enable the logo on the capture pin but not on the preview pin, and thereby save some CPU time. Figure 42. Pin Select Capture When you click Capture, the current logo settings for the capture pin are loaded, and changes you make apply only to the capture pin, not to the preview pin. Preview The Preview button works analogously.
Setting Driver Properties Enable Key Color Figure 44. Enable Key Color You can control the key color and the transparency effect. If preview video is running, you see your changes interactively. The key color disappears from the graphic so the underlying video shows through unchanged. If you disable Enable Key Color, all colors are displayed. If you enable the checkbox, key coloring is activated. The five radio buttons are activated.
Osprey 240e/450e User Guide Weighting The degree of transparency of the logo is variable through 101 steps. If the setting is 100, the logo is opaque. If the setting is 0, the logo is completely transparent. If you have set a key color, the weighting or transparency value is applied only to pixels that do not match the key color and hence are always completely transparent. You can set the weighting either with the slider or by editing the number in the text box (Figure 46). Figure 46.
Setting Driver Properties Figure 48. Logo position and size 52 Because the Logo tab is used to set up a logo interactively on live video, its behavior is different from the behavior of the other tabs. The driver updates the controls on the Logo tab immediately, without waiting for you to click Apply. You see Apply enabled after you select a different pin spec. As soon as you make any change to any logo control, Apply becomes disabled and stays that way until you change to another pin spec.
Osprey 240e/450e User Guide Size and Crop tab This tab (Figure 49) has two functions. It sets the default output size, whether or not cropping is enabled. It enables and disables cropping, and sets the cropping area. Cropping means removal of unwanted video around the edges of the incoming image. For example, if the incoming video is letterboxed, with an aspect ratio wider than 4:3, you can crop the black slivers at the top and bottom of the image and capture just the active portion. Figure 49.
Setting Driver Properties Reference Size Displays the full uncropped size of the incoming video. This read-only information is determined by settings made on other tabs: the Input tab and the RefSize tab. Granularity This control helps you choose crop and output sizes that observe those restrictions Enable Cropping When enabled, your video is cropped to the indicated boundaries. When disabled, your video is not cropped regardless of any crop settings you may have made previously.
Osprey 240e/450e User Guide Granularity Osprey products impose restrictions on the possible width and/or height of the video, referred to as granularity restrictions. For example, the I420 capture format requires that the capture width be a multiple of 16 and the capture height be a multiple of 2. When video is cropped, they also impose a requirement for alignment of the left side of the cropped video field. The specific requirements for the 4.5 driver are changed from the 3.X.X driver versions.
Setting Driver Properties If your Pin Select setting is Both, both the Capture and Preview fields are enabled, and the two fields to the right of the group show the worst-case granularity that works for both the Capture and Preview color formats. For example, if the Capture color format is I420 and the Preview color format is YUY2, the resultant granularity is I420’s more stringent 4 x 2 requirement.
Osprey 240e/450e User Guide Recalc button The Recalc button recalculates whichever of the six crop edit boxes you have not filled in. For example, if you set Top, Left, Width, and Height, Recalc calculates Right and Bottom. If you set Top, Left, Right, and Bottom, Recalc calculates Width and Height. Whichever of the vertical group was least recently touched, is the item that is recalculated; similarly with the horizontal group.
Setting Driver Properties Default Output Size Figure 52. Default Output Size The standard DirectShow Properties dialog allows you to select the height and width of captured video (Figure 52). If you click Auto Size, your default video size is sized automatically to your crop settings. The three radio buttons, 1X Crop, 1/2X Crop, and 1/4X Crop, determine whether the output size is scaled down from the crop size.
Osprey 240e/450e User Guide AVStream driver reference information DirectShow technology uses terms with specific meanings. For example, filter, pin, driver and device appear frequently when discussing DirectShow media standards. Figure 53 depicts the relationship of DirectShow terms as they apply to Osprey hardware and drivers. Figure 53. DirectShow At the bottom of this diagram are one or more physical Osprey hardware devices.
AVStream Driver Reference Information Each Video Filter has one Capture Pin and one Preview Pin. A pin is the source or destination of a video or audio stream. A video capture pin is a general purpose pin used for capture to a file, an encoder, an on-screen renderer, or any other destination. A video preview pin is mainly intended for on-screen rendering. Each Osprey Video Filter also has a Closed Caption pin and a Vertical Blanking Interval (VBI) pin for capture of specialized ancillary data.
Osprey 240e/450e User Guide Post-Processing mode The Osprey 240/450e 4.5 driver operates in Post-Processing mode only. Post-Processing mode enables a number of filters, transforms, and renderers within the driver, and supports the SimulStream option. Figure 54. Post-Processing mode Figure 54 shows a possible graph of video data flow within the driver in Post-Processing mode. This particular graph assumes that SimulStream is activated so that more than two video pins are possible.
AVStream Driver Reference Information and rate, color formats, or crop settings. The driver color converts and copies video as required to deliver up to 25 or 29.97 frames per second in any format to the two pins. With SimulStream enabled, there can be multiple capture pins and multiple preview pins. Each capture and preview pin pair is placed on a separate filter.
Osprey 240e/450e User Guide Efficient Video Rendering The following information is primarily useful to developers, but may also be helpful for those who want to fine-tune existing applications. If you are seeing poor rendering performance, in terms of either excessive CPU utilization or jerky, stuttering video, read this section. There are at least four basic ways to render video from the capture driver onto the screen.
AVStream Driver Reference Information Preview Pin to VMR7 Figure 57. Video Mixing Renderer 7 VMR7 is short for Video Mixing Renderer 7. VMR7 is a newer renderer that is generally much faster than the old Video Renderer. When the driver is running in Direct Mode, VMR7 uses an efficient DirectDraw configuration to render with almost no CPU overhead, especially when YUY2 video is used. When the driver is running in PostProcessing Mode, DirectDraw is not used but it is still the fastest renderer.
Osprey 240e/450e User Guide Preview Pin to VMR9 Figure 58. Video Mixing Renderer 9 Video Mixing Renderer 9 is the newest video rendering method and the one on which Microsoft supposedly is basing its future development. The intent is to combine the functionality of the Overlay Mixer plus Video Renderer in one module that takes advantage of the latest developments in DirectShow.
AVStream Driver Reference Information video, you may see high CPU utilization, but much or most of it is from the encoder rather than the driver.
Osprey 240e/450e User Guide Video standards and sizes Video standard refers to whether the video signal format is NTSC, PAL, or SECAM. Depending on the exact product version you have, some or all of the following standards are available: 525-line formats: NTSC-M – North America NTSC-J – Japan 625-line formats: PAL-B, D, G, H, I – many countries in Europe and elsewhere. B, D, G, H, and I refer to five nearly identical subformats.
AVStream Driver Reference Information RGB32 – Each pixel has four bytes (32 bits) of data – one each for red, green, and blue, plus one byte that is unused. The pixel has 256 shades of each of the three colors, for a total of 16.7 million colors. RGB24 – Each pixel has three bytes (24 bits) of data – one each for red, green, and blue. This is another “true color” mode with 16.7 million colors. RGB555 – Each pixel has two bytes (16 bits) of data.
Osprey 240e/450e User Guide Closed captioning (CC) The Osprey AVStream driver supports NTSC closed captions in three separate ways. Through standard DirectShow CC and VBI pin. By rendering captions directly onto video on the capture or preview pin. The captioned video can be streamed, written to file, or rendered directly. Through an Osprey custom property.
AVStream Driver Reference Information The driver has three built-in user-accessible controls that affect Closed Captioning. On the RefSize property page, in the control group shown below, 480-line video must be selected and the radio button to start video at either Lines 23/286 or Lines 22/285 must be selected. On the Captions property page, most of the controls relate to the driver’s internal direct rendering on video.
Osprey 240e/450e User Guide CC streaming interface The driver supports an Osprey custom property which provides the closed caption character stream for use by custom applications. The Osprey filter named CCLineInterp.ax, supplied with the driver package, provides user-mode support for this captioning mode. The Osprey sample applet named CCChannels.exe, also supplied with the driver package, demos a CC line interpreter and XDS (vchip) extraction and display.
AVStream Driver Reference Information application. This capability requires custom programming. Refer to the Osprey AVStream SDK Users’ Guide. A sample SDK applet named TCApp illustrates the interface. Figure 61. Timecode Video Marking Timecode stamping must be enabled in the driver before it can be used, and the field and line number correctly set.
Osprey 240e/450e User Guide The audio driver Setup and control for audio are much simpler than for video. Selecting the audio source and input volume The audio source is set using the Osprey mixer driver interface. Most applications, including the Windows Media Encoder applications, interface to the mixer driver directly and expose the look and feel specific to that application. However, the default Windows interface to the mixer driver can also be used.
The Audio Driver To get to the Osprey audio capture (recording) device, select Properties under Recording Control options menu. This opens the Properties dialog. Click on the Mixer device drop-down list at the top to see the list of audio input and output devices, including one or more Osprey cards. When you have chosen the device, click OK, and you will be returned to the Recording Control display (Figure 63). The Osprey device is not a mixer in that it does not allow for mixing the various audio sources.
Osprey 240e/450e User Guide Audio properties page Many applications, including Windows Media Encoder, display the illustrated property dialog for setting audio source and volume level. This is a general-purpose DirectShow property page that our driver has to support but which is not quite intuitive in its operation (Figure 64). Figure 64. Audio properties page To select the audio source using this dialog, select the desired input in the Pin Line: selection box, then click Enable.
The Audio Driver Audio formats The Osprey hardware supports sampling of analog audio at 32, 44.1 and 48 kHz in 16-bit PCM format. Captured audio data is down-sampled and reformatted if necessary by Microsoft system audio components, allowing an application to capture audio data in 8-bit and 16-bit mono or stereo formats at any of the following data rates: 8 kHz 11.025 kHz 16 kHz 22.05 kHz 32 kHz 44.
Osprey 240e/450e User Guide In Figure 64, the Audio Level control is different depending on which input is selected. The Input Reference level is meaningful only on the analog unbalanced and balanced inputs, and is calibrated differently for each when a digital input is selected this control is disabled. This is a hardware gain control with the default level chosen such that the expected amplitude of a full volume input signal will have adequate headroom without clipping.
The Audio Driver 78 ViewCast
Osprey 240e/450e User Guide Appendix A: Osprey hardware specifications Osprey 240e Environmental specifications Operating temperature range 0 to 40 C Non-operating temperature range -40 to +75 C Operating humidity range Between 5 % and 80 % (non-condensing) @ 40 C Non-operating humidity range 95 % RH (non-condensing; gradient 30 % per hour Operating altitude range 0 to 3,048 meters (10,000 feet) Non-operating altitude range 0 to 15,240 meters (50,000 feet) PCI Express Bus compliant Approximat
Appendix A: Osprey Hardware Specifications Figure 66. Osprey 240e long backplate Figure 67. Osprey 240e short backplate Figure 68.
Osprey 240e/450e User Guide Osprey 450e Figure 69.
Appendix A: Osprey Hardware Specifications 82 ViewCast
Osprey 240e/450e User Guide Appendix B: Osprey 450e audio cable Figure 70 shows the male connector on the cable. Figure 70.
Osprey 240e/450e User Guide Appendix C: Troubleshooting Color bars on video screen The Osprey 240e/450e AVStream driver has a built-in color bar generator. If color bars appear in your video preview window, it is an indication that video is not present on the selected video input (Figure 71). The color bar display can be adjusted or changed in the Device Properties tab, including the text overlay on the screen. Figure 71.
Appendix C: Troubleshooting Poor video quality at large frame sizes Large frame sizes with the deep pixel depth (24- or 32-bit), or complex format (YVU9 or YUV12 planar), impose heavy demands on the PCI bus’ data transfer capacity. Our experience is that some systems cannot handle these formats at full frame sizes. Systems vary in their data transfer limits. The characteristics of the PCI bridge are often more important than processor speed.
Osprey 240e/450e User Guide Audio recording control comes up with wrong device and wrong inputs The cause of this problem may be that you currently have or have had previously, a Video for Windows audio capture driver installed in the system. The Osprey AVStream install process normally removes a previous Video for Windows driver, but if you have multiple Osprey cards installed you do have the option of running the Video for Windows driver on some cards and the AVStream driver on others.
Osprey 240e/450e User Guide Index 16:9 Wide, 24 525-Line (NTSC) Vertical Format, 27 Accessing the OspreyConfig Utility, 7 ActiveMovie Window, 71 Adaptive Deinterlace window, 36 adjust dialog, 36 Audio Level control, 77 Audio properties page, 75 Auto, 34 Auto Size checkbox, 58 Auto Sizes, 58 AVI-Compatible mode, 40 basic reference size, 62 Both button, 44, 49, 54 Browse for File button, 49 buffers, 39 Captions tab, 43 Capture, 39 Capture button, 44, 49, 54 Capture color format, 56 Capture drop-down list, 55
Appendix C: Troubleshooting key color, 50 logical white, 45 Logo position, 51 Logo Position, 51 Logo position and size, 52 logo property controls, 48 Logo tab, 47, 52 luma, 16 motion adaptive, 34 motion adaptive deinterlace, 35 motion threshold, 36 multiple filters, 32 Multiple instances, 32 Multiple instances of each filter, 33 Normal timestamping, 40 Notch Kill, 18 No-Video Test Pattern, 39 Nudge buttons, 51 Number of Capture Buffers Requested, 39 one filter, 32 Osprey 240e Custom Setup screen, 4 Osprey
Osprey 240e/450e User Guide video rendering, 63 video standard, 15, 67 Video Standard, 17 Video Standard drop-down list, 17 Video Standard field, 17 ViewCast VMR7, 64, 65 VMR9, 65 Volume Control, 73 Warranties, 1 91
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